adds the BIT constant
run HierarchicalKey tests in the browser

...not BIP32, which is the old name for HierarchicalKey
Merge pull request #375 from matiu/feature/bit

adds the BIT constant
Merge pull request #376 from ryanxcharles/bug/hierarchicalkey-tests

run HierarchicalKey tests in the browser
add problematic test
wierdest way of fixing the problem
attempt to fix in linux
remove console.log